Dynamic changes in membrane lipid composition of leaves of winter wheat seedlings in response to PEG-induced water stress.

ABSTRACT: BACKGROUND:Membrane lipid composition associates closely with membrane stability and fluidity under water stress. In this study, lipidomic analyses based on electrospray ionization mass spectrometry (ESI-MS/MS) were carried out to explore dynamic changes of membrane lipids in term of molecular species caused by PEG (Polyethylene glycol-6000)-induced water stress in wheat seedlings. RESULTS:Among the main phospholipids, phosphatidylcholine (PC), phosphatidylethanolamine (PE), and phosphatidylglycerol (PG) are primary degradation targets, and PC was degraded in the largest degree. Membrane ion leakage dramatically increased later than the significant reduction of these phospholipids, indicating that the loss of membrane integrity lagged behind severe phospholipid degradation. Monogalactosyld

SUBMITTER: Wang Y 

PROVIDER: S-EPMC7035713 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature